"Big Cliff" shadow issue

Currently the big cliffs are shaded, but this poses a big problem, when stacking these cliffs, the dark part looks out of place, and can't really be stacked normally.

There is some janky solutions like the one I usually do in the screenshot, but it still looks off from close-up.

This could be solved easily by adding unshaded versions of the cliff.

By unshaded, I mean the part in the red circle should be unshaded, the basic shading is fine otherwise, just the height based shadows mess things up.